JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 50

fatigue behaviour
More information: www.vm.lr.tudelft.nl References [1] Schijve, J. (2009), Fatigue of Structures and Materials, 2nd edition, Springer. [2] Harris, B. (Ed.) (2003), Fatigue in Composites, Woodhead Publishing Ltd. [3] Boerstra, G.K. (2007), The Multislope model: A new description for the fatigue strength of glass fibre reinforced plastic, International Journal of Fatigue 29:1571–1576. [4] Greenhalgh, E.S. (2009), Failure analysis and fractography of polymer composites, Woodhead Publishing Ltd. [5] Sridharan, S. (Ed.) (2008), Delamination behaviour of composites, Woodhead Publishing Ltd. [6] Schaff, J.R. (2001), Fatigue and Life Prediction, ASM Handbook, Volume 21, ASM International Handbook Committee. [7] Bradley, W.L., Cohen, R.N., Matrix deformation and fracture in graphite-reinforced epoxies, ASTM STP 876, 389–410, 1985. [8] Hunston, D.L., Moulton, R.J., Johnston, J.J., Bascom, W.D., Matrix resin effects in composite delamination: mode I fracture aspects, ASTM STP 937, 74–94, 1987. [9] Rans, C.D., Alderliesten, R.C, Benedictus, R. (2011), Misinterpreting the results: How similitude can improve our understanding of fatigue delamination growth, Composites Science and Technology 71 (2), pp. 230-238. [10] Alderliesten, R.C, Rans, C.D., Khan, S.U., Benedictus, R. (2009), Understanding the fatigue behavior of FML structures and materials under complex variable amplitude loading, Proceedings of the 2009 aircraft structural integrity program conference, Jacksonville FL, USA. [11] Alderliesten, R.C (2007), Damage Tolerance of Bonded Aircraft Structures, First International Conference on Damage Tolerance of Aircraft Structures, Delft, The Netherlands.

Fig. 8: Delamination growth calculated for 180 kcycles with the delamination resistance curve for FML interfaces; the limited delamination size corresponds to reported ‘no delamination observed’ [11]

the test using the delamination resistance curve for Glare revealed that for tested cases, less than 0.3 mm delamination growth could be expected (see Fig. 8).

Conclusions
This paper briefly touches upon the currently applied approaches to fatigue and damage tolerance of composite structures. In line with the recent advancements made in investigating these aspects in composites and fibre metal laminates, it explains how a generic approach could serve both fatigue evaluation and damage tolerance justification. The approach must be further developed to be generically applied to actual GFRP and CFRP structures, but it requires a lot less than the often feared way of micro-mechanical modelling and multi-scale modelling. Even a straightforward macro-mechanical approach can be adopted where the mechanical properties and the damage resistance data have been characterized with macroscopic tests. n

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50 jec composites magazine / No74 July 2012


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JEC COMPOSITES MAGAZINE - Issue #74 - July 2012

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #74 - July 2012

Cover
Edito
Point of view: Closer to the shop floor
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Glass fibre
APPLICATIONS
- Pipes & tanks
- Building
MARKET
- Human resources
- Glass fibre
- Turkey
FEATURE AUTOMOTIVE
- Braiding
- Lightening
- D-LFT
- Sustainability
- RTM
- RIM
RESEARCH & DEVELOPMENT
- Design
- Fatigue behaviour
TECHNOLOGY & INNOVATIONS
- Wind
- Reinforcement
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Cover
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 2
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Edito
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Point of view: Closer to the shop floor
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 5
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Contents
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 7
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Glass fibre
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 11
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 12
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Pipes & tanks
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Building
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 15
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 16
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 17
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Human resources
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Glass fibre
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 20
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 21
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Turkey
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 23
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Braiding
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 25
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Lightening
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 27
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 28
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 29
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - D-LFT
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 31
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 32
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 33
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Sustainability
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 35
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 36
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - RTM
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 38
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 39
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - RIM
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Design
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 42
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 43
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 44
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 45
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Fatigue behaviour
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 47
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 48
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 49
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 50
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Wind
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 52
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 53
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 55
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 56
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - Index
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - In the world
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 59
JEC COMPOSITES MAGAZINE - Issue #74 - July 2012 - 60
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